Carbureter.



W. SHAKESPEARL JR. & W. SCHNHD CARBURETER. 7 APPLICATION man MAR. 22. 1915.

1,234,399., Patented 1111 24, 1917.

hi Ea EEK 7 a la gvwnto'oa W/Wmm Shakespeawe J/r MIA WW Swim/k2 nnrrnn srarns rlgrnn' r ornrcn WILLIAM SHAKESPEARE, JR., AN D WILLIAM SCI-IMID, OF KALAMAZOO, MICHIGAN, ASSIGNORS TO WILLIAM SHAKESPEARE, JR., COMPANY, OF KALAMAZOO, MICHIGAN.

CARBURETER.

Application filed March 22,- 1915.

To all whom it may concern:

Be it known that we, WILLIAM SHAKES- rnnnn, J1-., and TILLIAM SoHMID, citizens of the United States, residing at Kalamazoo, Michigan, have invented certain new and useful Improvements in Carbureters, of which the following is a specification.

This invention relates to improvements in carbureters.

The main objects .of this invention are:

First, to provide an improved carburetor in which the proper relative proportions of fuel and air are automatically maintained throughout varying running conditions of the engine.

Second, to provide an improved throttle controlled carbureter in which the relative proportions of fuel and air are automatically maintained throughout the scope of the throttle adjustment.

Third, to provide an improved carbureter which is simple and compact in structure and not likely to get out of repair in use.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

We accomplish the objects of our invention by the devices and means described in the followingspecification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of our invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in which:

Figure I is a vertical central section through a structure embodying the features of our invention, parts being shown in full lines to better illustrate structural details thereof.

Fig. 11 is a detail vertical section on a line corresponding to line 22 of Fig. I.

In the drawings similar reference characters refer to similar parts in both views.

Referring to the drawings, the body of our improved carbureter consists of the intermediate body member 1 having a peripheral flange-like side wall portion 2 and a central depending tube 3. The top body member dis adapted to fit on the upper edge of the wall portion 2 of the body member 1 and the members are secured together by the screws 5 arranged through ears 6.

The top body member is provided with an air inlet 7 and. a discharge 8. The discharge Specification of Letters Patent.

Patented ma at, 19f'7.

Serial No. 16,220.

8 is controlled by the throttle valve 9 having an arm 10 thereon adapted to receive suitable operating connections. The body member 4 has a flange 11 by means of which 1t is secured to the manifold or other support.

The body member 1 is provided with an annular groove 12 on its under side in which the upper edge of the fuel reservoir 13 is disposed. The fuel reservoir has an opening 14: in its bottom through which the reduced threaded lower end of the tube 3 projects, the receptacle being clamped against the shoulder 15 by the nut 16.

The body member 1 is provided with an inlet passage 17 connected to a suitable supply pipe by the coupling 18. The inlet passage is controlled by the valve 19 arranged in a casing 20 with a projecting stem portion coacting with the lever 21 of the float 22. The float 22 is pivotally mounted on the arm 23 projecting from the side of the tube 3. The tube 3 has an opening 24: communicating with the fuel reservoir.

The carbureting chamber member 25 is provided with a. tubular extension 26 arranged in the upper end of the tube 3. This carbureting chamber member, in the struc ture illustrated, is flared upwardly and is provided with a top member 27. The top member 27 is supported in a spaced relation to the top of the carbureting chamber member by the spaced blocks or posts 27 to provide an annular discharge slot or orifice 28 for the carbureting chamber. The

.carbureting chamber is provided with a series of inlet openings 25. The diameter of the top member 27 is less than that of the top of the carbureting chamber member so that the projecting edge of the carbureting chamber member serves as a valve seat 29 for the annular sleeve-like valve 31.

Above the carbureting chamber member and delivering to the discharge 8 is a cylindrical mixing chamber member 30 which also constitutes a valve casing for the valve 31. The valve 31 has an inwardly projecting flange-like portion 32 at its lower end coaeting with the seat 29.

It will be noted that the discharge port 28 of the carbureting chamber discharges into the mixing chamber above this flange, while the carbureting chamber inlet ports 25 open into the lower end of the carbureting chamber close to the fuel nozzle 36 and consequently below the flange-like portion 32 of the valve. The valve is provided with a cross piece on which the fuel valve 3a is mounted. This fuel valve projects clownwardly through the top member of the carbureting chamber to coact with the valve seat 35 of the fuel nozzle 36. This fuel nozzle is arranged through the tube 3 and is threaded into the lower end of the tube for adjustment therein, the nozzle stem being provided with a finger piece 37.

The fuel is regulated by the adjustment of the nozzle.

The air actuated inlet valve 31 is preferably provided with a cylinder dash pot member 38 while a coacting plunger dash pot 39 is carried by the carbureting chamber top 27. This dash pot prevents chattering of the air inlet valve and it, being located in the mixing chamber between the inlet valve and the engine, is subject to the same variations and pressure as the air inlet valve, which is of great advantage in securing uniformity of action under varying, speed and running conditions of the engine.

With the parts thus arranged we provide a structure in which the relative proportions of air and fuel are maintained throughout the varying conditions of the engine and throughout throttle adjustments, the carbureter being controlled for normal operation entirely by the engine throttle.

The engine is entirely controlled through the throttle 9. The suction of the engine draws air through the inlet passage 7 and through the ports 25 into the carbureting chamber, taking up the fuel at the nozzle. This carbureted air is delivered into the mixing chamber at the rear of the seat of the valve 31. The valve 31 is lifted from its seat, opening the fuel valve, thereby regulating the flow of fuel to the amount of air. The fuel valve is adjusted normally so that it is not completely closed when the valve 31 is on its seat.

e have illustrated and described our improvements in a simple and practical embodiment. We have not attempted to illustrate or describe various embodiments or adaptations which may be desirable as we believe the disclosure made will enable those skilled in the art to which our invention relates to embody or adapt the same as conditions may require. We desire, however, to be understood as claiming our improvements specifically in the form illustrated as well as broadly within the scope of the appended claims.

Having thus described our invention, What we claim as new and desire to secure by Letters Patent, is:

1. In a carbureter, the combination of an intermediate body member having a peripheral flangelike side wall portion and a central depending tube shouldered at its lower end, said body member having a fuel inlet passage therein and an annular groove in its under side, a fuel reservoir arranged with its upper edge in said groove and having an opening in its bottom arranged on the reduced end of said tube, said tube having an opening therein communicating with said reservoir, a nut on said tube clamping said fuel reservoir in position, a top body member secured to said intermediate body mem ber and having an air inlet at the side and a discharge at the top, a cylindrical mixing chamber delivering to said discharge and depending within said top body member with its lower edge in a spaced relation to said intermediate body member, said mixing chamber member constituting a valve casing, an upwardly flaring carbureting chamber member having a tubular extension disposed in said tube, a top for said carbureting chamber member mounted thereon in a spaced relation to its edge to provide a discharge opening delivering to said mixing chamber, the projecting edge of said carbureting chamber member constituting a valve seat, a suction actuated annular valve arranged in said mixing chamber member and adapted to coa-ct with said valve seat of said carbureting chamber member, a fuel nozzle threaded for adjustmentin said tube and projecting into said carbureting chamber, said carbureting chamber member having air inlet openings, and a needle fuel valve carried by said suction actuated valve coacting with said nozzle.

2. In a carbureter, the combination of an intermediate body member having a peripheral flange-like side wall portion and a depending tube shouldered at its lower end, said body member having a fuel inlet passage therein and an annular groove in its under side, a fuel reservoir arranged with its upper edge in said groove and having an opening in its bottom arranged on the reduced end of said tube, saidtube having an opening therein communicating with said reservoir, a nut on said tube clamping said fuel reservoir in position, a top body member secured to said intermediate body member and having an air inlet at the side and a discharge at the top, a mixing chamber member delivering to said discharge and depending within said body member with its lower edge in a spaced relation to said intermediate body member, said mixing chamber member constituting a valve casing a carbureting chamber member mounted on said intermediate body member and provided with an opening delivering to said mixing chamber, said carbureting chamber being provided with a valve seat, a suction actuated annular valve arranged in said mixing chamber member to coact with said valve seat, a fuel nozzle threaded'for adjustment in said tube and projecting into said carbureting chamber, said carbureting chamber member having air inlet openings, and a fuel valve carried by said suction actuated valve coacting with said nozzle.

In a carbureter, the combination of an intermediate body member having a depend ing tube, a fuel reservoir, said tube having an opening therein communicating with said reservoir, a top body member having an air inlet at the side and a discharge at the top, a cylindrical mixing chamber member delivering to said discharge and depending within said top body member with its lower edge in a spaced relation to said intermediate body member, said mixing chamber member constituting a valve casing, an upwardly flaring carbureting chamber member having a tubular extension disposed in said tube, a top for said carbureting chamber member mounted thereon in a spaced relation to its edge to provide a discharge opening delivering to said mixing chamber, the projecting edge of said carbureting chamber member constituting a valve seat, a suction actuated annular valve arranged in said mixing chamber member and adapted to coact with said valve seat of said carbureting chamber member, a fuel nozzle threaded for adjustment in said tube and projecting into said carbureting chamber, said carbureting chamber member having air inlet openings, and a needle fuel valve carried by said suction actuated valve coacting with said nozzle.

4. In a carbureter, the combination of an intermediate body member having a depend ing tube and a fuel inlet passage therein, a fuel reservoir arranged on said tube, said tube having an opening therein communicating with said reservoir, means for securing said fuel reservoir in position on said tube, a top body member secured to said interme diate body member and having an air inlet at the side and a discharge at the top, a mixing chamber member delivering to said dis charge and depending within said body member with its lower edge in a spaced relation to said intermediate body member, a carbureting chamber member mounted on said intermediate body member, a suction actuated inlet valve for said mixing chamber, said carbureting chamber member being provided with an air inlet opening in front of and with a discharge opening at the rear of said mixing chamber valve, a fuel nozzle delivering to said carbureting chamber, and a fuel valve carried by said suction actuated valve.

5. In a carbureter, the combination of an intermediate body member having a depending tube and a fuel inlet passage therein, a

fuel reservoir arranged on said tube, said tube having an opening therein communicating with said. reservoir, means for securing said fuel reservoir in position on said tube, a top body member secured to said intermediate body member and having an air inlet at the side and a discharge at the top, a mixing chamber delivering to said discharge, a carbureting chamber, a suction actuated in let valve for said mixing chamber, a fuel nozzle delivering to said carbureting chamber, said carbureting chamber member being provided with an air inlet opening in front of and a discharge opening at the rear of said mixing chamber inlet valve, and a fuel valve carried by said suction actuated valve.

6. In a carburetor, the combination of an intermediate body member having a depending tube, a fuel reservoir, said tube having an opening therein communicating with said reservoir, a top body member having an air inlet and a discharge, a throttle for said discharge, a mixing chamber member delivering to said discharge and depending within said body member with its lower edge in a spaced relation to said intermediate body member, said mixing chamber-member eonstituting a valve casing, a carbureting chamber member mounted on said intermediate body member, said carbureting chamber be ing provided with a valve seat, a suction actuated annular valve arranged in said mixing chamber member to coact with said valve seat, said carbureting chamber member being provided with an air inlet in front of and a discharge at the rear of said mixing chamber valve, a dash pot member carried by said valve, a coacting dash pot member mounted on said carbureting member, a fuel nozzle threaded for adjustment in said tube and projecting into said carbureting chamber, and a fuel valve carried by said suction actuated valve eoacting with said nozzle.

7. In a carburetor, the combination of an intermediate body member having a depending tube, a fuel reservoir, said tube having an opening therein communicating with said reservoir, a top body member having an air inlet and a discharge, a throttle for said discharge, a mixing chamber member delivering to said discharge and depending within said body member with its lower edge in a spaced relation to said intermediate body member,said mixing chamber memberconstituting a valve casing, a carbureting chamber member mounted on said intermediate body member, said carbureting chamber being provided with a valve seat, a suction actuated annular valve arranged in said mixing chamber member to coact with said valve seat, said carbureting chamber member being provided with an air inlet in front of and a discharge at the rear of said mixing chamber valve, a fuel nozzle threaded for adjustment in said tube and projecting into said carbureting chamber, and afuel valve carried by said suction actuated valve coact ing with said nozzle.

8. In a carbureter, the combination of an intermediate body member having a depend ing tube, a fuel reservoir mounted on said tube, said tube having an opening therein communicating with said reservoir, a top body member having an air inlet and a discharge, a throttle for said discharge, a mixing chamber member delivering to said dis charge and depending within said body member with its lower edge in a spaced relation to said intermediate body member, a carbureting chamber member mounted on said intermediate body member, a suction actuated inlet valve for said mixing chamber, said carbureting chamber member being provided with an air inlet in front of and a discharge at the rear of said mixing chamber valve, a fuel nozzle delivering to said carbureting chamber, and a fuel valve carried by said suction actuated valve.

9. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a fuel reservoir, a tube disposed through said reservoir and communicating therewith, a mixing chamber member delivering to said discharge, said mixing chamber member constituting a valve casing, an upwardly flaring carbureting chamber member having a tubular extension disposed in said tube, a top for said carbureting chamber member mounted thereon in a spaced relation to its edges to provide a discharge slot delivering to said mixing chamber, the

rojecting edge of said carbureting chamer member constituting a valve seat, said carbureting chamber having air inlets below said valve seat, a suction actuated annular valve arranged in said mixing chamber member and adapted to coact with said valve seat of said carbureting chamber member, a fuel nozzle threaded for adjustment in said tube and projecting into said carbureting chamber, and a fuel valve carried by said suction actuated valve coacting with said nozzle. 7

10. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a fuel reservoir, a mix ing chamber member delivering to said discharge, said mixing chamber member constituting a valve casing, a carbureting chamber provided with an air inlet and with an opening delivering to said mixing chamber, 7

said carbureting chamber being provided with a valve seat, a suction actuated annular valve arranged in said mixing chamber member to coact with said valve seat, a dash pot member carried by said valve, a coacting dash pot member mounted on said carbureting chamber member, a fuel nozzle delivering to said carbureting chamber, and a fuel valve carried by said suction actuated valve coacting with said nozzle.

11. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a cylindrical mixing chamber member depending into said body and delivering to said discharge, a carbureting chamber member disposed centrally of said mixing chamber member and provided with a valve seat and with a delivery opening above said valve seat, a suction actuated annular mixing chamber valve coacting with said valve seat and slidable within said mixing chamber member, a nozzle delivering centrally to said carbureting chamber, said carbureting chamber having air inlets adj acent said nozzle, a dash-pot member carried by said valve, a coacting dash-pot member on said carbureting chamber member, and a fuel valve carried by said mixing chamber valve disposed centrally through said dashpot members. Y

12. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a cylindrical mixing chamber member depending into said body and delivering to said discharge, a carbureting chamber member disposed centrally of said mixing chamber member and provided with a valve seat and with a delivery opening above said valve seat, a suction actuated annular mixing chamber valve coacting with said valve seat and slidable within said mixing chamber member, a nozzle delivering centrally to said carbureting chamber, said carbureting chamber having air inlets adjacent said nozzle, and a fuel valve carried by said mixing chamber valve to coact with said nozzle.

13. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a cylindrical mixing chamber member depending into said body and delivering to said discharge, a carbureting chamber member disposed centrally of said mixing chamber member and provided with an annular valve seat and with an annular delivering opening above said valve seat, a suction annular sleeve-like mixing chamber valve coacting with said valve seat and slidable within said mixing chamber member and providing when open an unobstructed annular port surrounding the annular discharge of said carbureting chamber, a dash-pot member carried by said valve, a coacting dash-pot member on said carbureting chamber member, and a fuel valve carried by said mixing chamber valve.

ll. In a carbureter, the combination of a chambered body provided with inlet and discharge openings, a cylindrical mixing chamber member depending into said body and delivering tosaid discharge, a carbureting chamber member disposed centrally of said mixing chamber member and provided with an annular valve seat and with an annular delivery opening above said valve seat, a suction annular sleeve-like mixing our hands and seals in the presence of two 10 chamber valve coacting with said valve seat Witnesses. and slidable Within said mixing chamber member and providing when open an un0b WILLIAM SHAKESPEARE, JR. [1,. s.] strueted annular port surrounding the an- WILLIAM SCHMID. [1 s] nular discharge of said carbureting chamber, and a fuel valve carried by said mixing WVitnesses: chamber valve. LUELLA G. GREENFIELD,

In witness whereof, We have hereunto set MARGARET L. GLASGOW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

